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Phase sensitive low-coherence interferometry using microwave


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Title:
Phase sensitive low-coherence interferometry using microwave
Authors:
Clement Bellido, Juan  
Maestre, Haroldo  
Torregrosa-Penalva, Germán  
Fernandez-Pousa, Carlos  
Editor:
Optica Publishing Group
Department:
Departamentos de la UMH::Ingeniería de Comunicaciones
Issue Date:
2020-09-14
URI:
https://hdl.handle.net/11000/30648
Abstract:
We report on a low-coherence interferometer based on Microwave Photonics (MWP) which allows, for the first time to the best of our knowledge, stable determination of the interferogram’s phase. The interferometer is built on suppressed carrier, double-sideband modulation, dispersive propagation in a chirped fiber Bragg grating, demodulation by electrooptical frequency down-conversion, and suitable signal processing techniques to account for modulation impairments. Taking as a reference a direct normalization of the link’s microwave response, the system retrieves high-resolution interferograms, both in amplitude and phase and free from distortion induced by higher-order dispersion, in an optical path difference of 16.3 mm, surpassing previously reported values based on MWP implementations. We present representative applications targeted to the characterization of C-band sources and components, such as direct analysis of interferograms with 5.5 fs temporal resolution, Fourier-transform spectroscopy with 14 GHz spectral resolution, and optical low-coherence reflectrometry of the impulse response’s amplitude of fiber Bragg gratings with 0.55 m spatial resolution.
Knowledge area:
CDU: Ciencias aplicadas: Ingeniería. Tecnología
Type of document:
application/pdf
Access rights:
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
DOI:
https://doi.org/10.1364/OE.403176
Appears in Collections:
Artículos Ingeniería Comunicaciones



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